This title appears in the Scientific Report :
2011
Please use the identifier:
http://dx.doi.org/10.1016/j.jnucmat.2010.12.209 in citations.
Materials Research Under ITER-Like Divertor Conditions at FOM Rijnhuizen
Materials Research Under ITER-Like Divertor Conditions at FOM Rijnhuizen
At FOM Rijnhuizen, linear plasma generators are used to investigate plasma-material interactions under high-density (<= 10(21) m(-3)), low-temperature (<= 5 eV) plasma bombardment. Research into carbon-based materials has been focused on chemical erosion by hydrogen plasmas. Results from plasm...
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Personal Name(s): | Wright, G. M. |
---|---|
Westerhout, J. / Al, R.S. / Alves, E. / Alves, L.C. / Barradas, N.P. / Van den Berg, M.A. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Journal of nuclear materials, 417 (2011) |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2011
|
DOI: |
10.1016/j.jnucmat.2010.12.209 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Journal of Nuclear Materials
417 |
Subject (ZB): | |
Publikationsportal JuSER |
At FOM Rijnhuizen, linear plasma generators are used to investigate plasma-material interactions under high-density (<= 10(21) m(-3)), low-temperature (<= 5 eV) plasma bombardment. Research into carbon-based materials has been focused on chemical erosion by hydrogen plasmas. Results from plasma exposure to high-flux (>10(23) H+/m(2) s) and low-temperature hydrogen plasma indicate silicon carbide has a lower relative rate of gross erosion than other carbon-based materials (e.g. graphite, diamond, carbon-fiber composites) by a factor of 7-10. Hydrogenic retention is the focus of research on tungsten and molybdenum. For target temperatures of 700-1600 K. the temperature dependence of hydrogenic retention is the dominant factor. Damage to the surface by heavy ion irradiation has shown to enhance retention by a factor of 2.5-4.1. Thermal stressing of W via, e-beam thermal cycling also enhances hydrogenic retention by a factor of 2.1 +/- 0.2, likely due to the introduction of thermal defects, which act as trapping sites for implanted hydrogenic isotopes. (C) 2011 Elsevier B.V. All rights reserved. |